85517186523 has 16 divisors (see below), whose sum is σ = 114184560672. Its totient is φ = 56930688000.

The previous prime is 85517186509. The next prime is 85517186537. The reversal of 85517186523 is 32568171558.

It is an interprime number because it is at equal distance from previous prime (85517186509) and next prime (85517186537).

It is not a de Polignac number, because 85517186523 - 2⁹ = 85517186011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85517186593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9309993 + ... + 9319173.

It is an arithmetic number, because the mean of its divisors is an integer number (7136535042).

Almost surely, 2^85517186523 is an apocalyptic number.

85517186523 is a deficient number, since it is larger than the sum of its proper divisors (28667374149).

85517186523 is a wasteful number, since it uses less digits than its factorization.

85517186523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246.

The product of its digits is 2016000, while the sum is 51.

The spelling of 85517186523 in words is "eighty-five billion, five hundred seventeen million, one hundred eighty-six thousand, five hundred twenty-three".